Climate simulations and pollen data reveal the distribution and connectivity of temperate tree populations in eastern Asia during the Last Glacial Maximum
-
Published:2020-11-04
Issue:6
Volume:16
Page:2039-2054
-
ISSN:1814-9332
-
Container-title:Climate of the Past
-
language:en
-
Short-container-title:Clim. Past
Author:
Leroy Suzanne Alice GhislaineORCID, Arpe Klaus, Mikolajewicz Uwe, Wu JingORCID
Abstract
Abstract. Publications on temperate deciduous tree refugia in Europe are abundant, but
little is known about the patterns of temperate tree refugia in eastern
Asia, an area where biodiversity survived Quaternary glaciations and which
has the world's most diverse temperate flora. Our goal is to compare climate
model simulations with pollen data in order to establish the location of
glacial refugia during the Last Glacial Maximum (LGM). Limits in
which temperate deciduous trees can survive are taken from the literature.
The model outputs are first tested for the present by comparing climate
models with published modern pollen data. As this method turned out to be
satisfactory for the present, the same approach was used for the LGM.
Climate model simulations (ECHAM5 T106), statistically further downscaled,
are used to infer the temperate deciduous tree distribution during the LGM.
These were compared with available fossil temperate tree pollen occurrences. The impact of the LGM on the eastern Asian climate was much weaker than on
the European climate. The area of possible tree growth shifts only by about
2∘ to the south between the present and the LGM. This contributes
to explaining the greater biodiversity of forests in eastern Asia compared to
Europe. Climate simulations and the available, although fractional, fossil
pollen data agree. Therefore, climate estimations can safely be used to fill
areas without pollen data by mapping potential refugia distributions. The
results show two important areas with population connectivity: the Yellow
Sea emerged shelf and the southern Himalayas. These two areas were suitable
for temperate deciduous tree growth, providing corridors for population
migration and connectivity (i.e. less population fragmentation) in glacial
periods. Many tree populations live in interglacial refugia, not glacial
ones. The fact that the model simulation for the LGM fits so well with
observed pollen distribution is another indication that the model used is
good enough to also simulate the LGM period.
Publisher
Copernicus GmbH
Subject
Paleontology,Stratigraphy,Global and Planetary Change
Reference97 articles.
1. Annan, J. D. and Hargreaves, J. C.: A new global reconstruction of temperature changes at the Last Glacial Maximum, Clim. Past, 9, 367–376, https://doi.org/10.5194/cp-9-367-2013, 2013. 2. Arpe, K., Leroy, S. A. G., and Mikolajewicz, U.: A comparison of climate simulations for the last glacial maximum with three different versions of the ECHAM model and implications for summer-green tree refugia, Clim. Past, 7, 91–114, https://doi.org/10.5194/cp-7-91-2011, 2011. 3. Becker, A., Finger, P., Meyer-Christoffer, A., Rudolf, B., Schamm, K., Schneider, U., and Ziese, M.: A description of the global land-surface precipitation data products of the Global Precipitation Climatology Centre with sample applications including centennial (trend) analysis from 1901–present, Earth Syst. Sci. Data, 5, 71–99, https://doi.org/10.5194/essd-5-71-2013, 2013. 4. Bhattacharyya, A., Mehrotra, N., Shah, S. K., Basavaiah, N., Chaudhary, V., Singh,
I. B., and Singh, I. B.: Analysis of vegetation and climate change during Late
Pleistocene from Ziro Valley, Arunachal Pradesh, Eastern Himalaya region,
Quaternary Sci. Rev., 101, 111–123, 2014. 5. Braconnot, P., Otto-Bliesner, B., Harrison, S., Joussaume, S., Peterchmitt, J.-Y., Abe-Ouchi, A., Crucifix, M., Driesschaert, E., Fichefet, Th., Hewitt, C. D., Kageyama, M., Kitoh, A., Laîné, A., Loutre, M.-F., Marti, O., Merkel, U., Ramstein, G., Valdes, P., Weber, S. L., Yu, Y., and Zhao, Y.: Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum – Part 1: experiments and large-scale features, Clim. Past, 3, 261–277, https://doi.org/10.5194/cp-3-261-2007, 2007.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. The deglacial forest conundrum;Nature Communications;2022-10-13
|
|